Gaging and mixing machine for concrete.



No. 630,420. Patented Aug. 8, |899.

.1. w. T. STEPHENS.

'GAGING AND MIXING MACHINE FOR CONCRETE.

(Application led Sept, 22, 1898.)

(No Model.)

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UNITED STATES PATENT OFFICE.

JAMES NV. T. STEPHENS, OF NEW YORK, N. Y.

GAGING'ND MIXING MACHINE FOR CONCRETE.

SPECIFICATION forming part of Letters Patent No. 630,420, dated August 8, 1899. Application filed September 22, 1898. Serial No. 691,587- (No model.)

siding at the city of New York, in the county and State ofNeW York, have invented a new and useful Improvement in Gaging and Mixing Machines for Concrete", dac., of which the following isa specification( My invention relates toa machine for rapidly, efficiently, and economically mixing such materials as are employed in making concrete, mortar, and the like in proper proportions for use in construction work.

In carrying out my`invention I employ a cylinder or drum having radial longitudinal partitions dividing the same into pockets and also having end heads and transverse partitions dividing the pockets into series.

The end frames 7e' b2 are supported upon a foundation 7c. The cylinder or drum A is provided with a hub around the shaft B, and from which hub longitudinal partitions a.' ce d2 a3 extend equally and radially. The drum is provided with end heads b b and with transverse partitions c c', which divide the pockets of the cylinder or drum up into series ol CZ d2. Above the cylinder or drum are placed hoppers e e e2, Which are preferably supported from the foundation k by angleiron or similarsupports Z Z. These hoppers are provided with ends and with transverse partitions above and in line with the partitions of the cylinder or drum, so that there are as many hoppers as there are series of pockets. The cylinder or drum is provided with openings at the pockets to receive the Hoppers for the materials to be mixed are placed above the cylinder or drum, andopenings are made in the cylinder which give access to the pockets, so that the material from the hoppers is delivered by gravity into the pockets. The pockets are graded according to the requisite quantities of the materials, and the materials are delivered with the rotation of the cylinder or drum into a trough, in whichthey are mixed dry and are fed endwise by a revolvingr screw conveyer. one end of this trough the materials are delivered into another and lower trough, where they are moistened by a Water-spray and are again thoroughly mixed and the Water incor-y porated therewith, and the materials are fed endwise in the opposite direction by another revolving screw conveyer, and the materials so mixed and moistened and in a condition ready for immediate use are delivered from the end of the trough.

In the drawings, Figure l is a vertical cross` section at the line xx. Fig. 2 is an elevation with the case at one side partially removed; Fig. 3 is a sectional plan above the troughs and screw conveyers. Fig. 4 is a section through the central series of pockets, and Fig. 5 is a section through the right-hand-end series of pockets.

The cylinder or drum A is mounted upon a shaft B in bearings in the end frames 7o k2. One end of the shaft B has a belt-wheel h, by which power is communicated, and on the other end of said shaft B is the gear-wheel h'.

From

materials from the hoppers, and from which pockets the materials are delivered as the cylinder or drum is rotated.

In mixing concrete the crushed stone would be placed in the hopper e, the cement in the hopper e', and the sand in the hopper e2.

Y In Fig. l the series of pockets d receives the crushed stone. In Fig. 4 the series of pockets d' receives the cement, and in Fig. 5 the series of pockets cl2 receives the sand.

It will be noticed from the section Fig. 5 that the pockets cl2 are provided with bottom plates 2, so as to make them shallower than the series of pockets CZ for the crushed stone, and it will be noticed from Fig. 4 that the pockets are reduced in number, there being only two instead of four, and these pockets are provided with bottoms 3 toreduce the size of the same for the cement, so that in the various series the proportion of the respective materials going to make up the concrete may be properly regulated.

I employ a 4sand-chute z', supported by and connected to the case 0 and inclined from the right-hand end of the machine toward the center, the object of this chute being to receive the sandfrom the series of pockets d2 as the cylinder ordrum revolves and deliver the same upon the stone under or at the same time with the delivery of the cement.

The materials from the respective series of pockets are delivered into the trough f, in which is the screw conveyer f', revolving in the direction of the arrow. I provide another IOO trough g, placed parallel with and slightly peringfrom the right to the left hand, and i' the bottom of the trough is slightly inclined. f This facilitates the quick and easy delivery` below the level of thetrough f, and in -thistrough gis a screw conveyer g'. The trough f and its screw conveyer f are within the limits of the case of the machine, while the trough g and the screw conveyer gextend from the right-hand end vof the case outside of and beyond the left-hand end, and the outer end of the trough Ais open for the deliv- The trough g and screw m ery of the material. conveyer g are preferably made slightly taof the mixed materials. YThe materials as delivered in the'trough f from the series of pockets of the drum are in a dry condition and are mixed'by vthe revolution of the screw con-AH ve'yerf and are fed toward the right-hand end of the trough, at which end the materials spill over into the trough g.

Running along the edge of the trough g opposite'to the trough f I prefer to place the perforated pipe m, from which water is delivered as a spray into the trough g and is incorporated with the materials to form the concrete as the same are mixed and fed lengthwise of the trough. -The quantity of water is vregulated according to. the materials, so f that the material as delivered is in a condi`A tion for immediate use. The shafts of the screw conveyersf' and g are mounted in suitable bearings, and their right-hand ends have gears h2 and ha, which mesh with each other,

the gear h meshing with the gear h2. Iprefer also to make the delivery end ofthe trough f slightly wider than the other end, so that the bottom of said trough inclines slightly in a direction opposite to the inclination of the trough g, and the size of the gears is such` edge of the case n is inclined so as to deliverv the 'stone and cement into the trough f.

In cross-section the openings in the cylinder or drum are about one-half the width .of

the pockets, so that the capacity of the pockl ets will be limited and controlled by the size of the openings, theadvancing edge of the drum at the openings acting as a cut-off, the casing of the drum preventing back spill as the pockets come into an upright position, and the forward radial partition, as a', on the other side of the openings in the casing and which comes to the outeredge of the casing insures thespeedy delivery of the contents of the pockets, and I provide a slide-plate r in the hopper e at the series of pockets d with a stop r' on the outside for supporting the slideplate upon the casing o. In filling the series of pockets d the plate r will lift should any stones become j amm ed between its lower edge and the cut-offedge of the cylinder as the same revolves.V y i I claimas my inventionl. In a mixing-machine, the combination lwith a series of hoppers, of a drum or cylinder having longitudinal radial partitions and end heads and transverse partitions dividing the drum into series of pockets with an opening in the drum at each of the pockets to receive the materials from the respective'hoppers, a trough for receiving the. materials delivered `from the series of pockets, a screwconveyer in said trough for mixing and feeding the materials lengthwise to one end of the trough, another trough parallel with theaforef said trough for receiving the materials delivered to it, a pipe running lengthwise of said second trough for delivering a water-spray into the trough upon the vmaterials, afscrew conveyer in said -second trough, for mixing the materials and incorporating the water therewith and delivering the materialsat one endof the second trough kready for use, substantially as set forth.

2. Ina mixing-machine, a cylinder or drum having longitudinal radial partitions, end heads and transverse partitions dividing the cylinder into a series of pockets with openin gs in the drum at the pockets, means forsupporting and rotating the drum, hopperssupported above the drum and conforming thereto, a case at each side of the drum, the case at one side being made with an inclined lower portion beneath the drum acting as a defiector, a tapering inclined trough below vthe edge of the deflector and at one side into which the materials from the pockets are delivered, a screw conveyer in said trough, a chute inclined from one side of the case for delivering materials from one of the end pockets into the trough in proximity to the material vcoming from the central pockets,a tapering trough below and parallel with the aforesaid trough and vinclined in the opposite direction for receiving the material from said trough,apipe running lengthwise of said second trough for water from which a spray is delivered into the trough upon the mixed materials, a screw conveyer in said second trough for mixing and feeding along the materials and incorporating the water therewith and 'delivering themlfrom one end of thevsecond trough, substantiallyas and for the purposes set forth.

3. In a mixing-machine, the combination with hoppers, of a rotatable drum or cylinder having partitions dividing the same longitudinally and transversely into pockets and having openings in the drum'that lengthwise of the drum agree with the length of the IOO IOS

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pockets and that transversely of the drum are stop r on the outside for supporting the slideabout half the Width 0f the pockets from the plate, substantially as set forth. 1o advancing edge, whereby the capacity of the Signed by me this 15th day of September, pockets is limited and controlled and back 1898.

5 spill prevented, and a slide-plate a" in the hop- I J. W. T. STEPHENS.

per at one series of pockets adapted to be Witnesses: raised by an obstruction in the material in the GEO. T. PINCKNEY,

hopper between the plate and drum and a HAROLD SERRELL. 

